74262dffb8
This patch updates all schedulers in order to support the scheduling of HA routers. It also refactors and adds tests for the auto scheduling part. The schedulers aren't expected to work when creating a router that's both distributed and highly available. Specific issues will be reported as bugs and fixed in a future patch. Partially-implements: blueprint l3-high-availability Change-Id: I2f80f45adeffa1a4eebcb375a4c8326177e84e83 Co-Authored-By: Assaf Muller <amuller@redhat.com>
96 lines
3.7 KiB
Python
96 lines
3.7 KiB
Python
# Copyright (c) 2013 OpenStack Foundation.
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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#
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# @author: Bob Melander, Cisco Systems, Inc.
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from oslo.config import cfg
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from neutron.api.rpc.agentnotifiers import l3_rpc_agent_api
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from neutron.api.rpc.handlers import l3_rpc
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from neutron.common import constants as q_const
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from neutron.common import rpc as n_rpc
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from neutron.common import topics
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from neutron.db import common_db_mixin
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from neutron.db import extraroute_db
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from neutron.db import l3_dvrscheduler_db
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from neutron.db import l3_gwmode_db
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from neutron.db import l3_hamode_db
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from neutron.db import l3_hascheduler_db
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from neutron.openstack.common import importutils
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from neutron.plugins.common import constants
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class L3RouterPlugin(common_db_mixin.CommonDbMixin,
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extraroute_db.ExtraRoute_db_mixin,
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l3_gwmode_db.L3_NAT_db_mixin,
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l3_dvrscheduler_db.L3_DVRsch_db_mixin,
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l3_hamode_db.L3_HA_NAT_db_mixin,
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l3_hascheduler_db.L3_HA_scheduler_db_mixin):
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"""Implementation of the Neutron L3 Router Service Plugin.
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This class implements a L3 service plugin that provides
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router and floatingip resources and manages associated
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request/response.
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All DB related work is implemented in classes
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l3_db.L3_NAT_db_mixin, l3_hamode_db.L3_HA_NAT_db_mixin,
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l3_dvr_db.L3_NAT_with_dvr_db_mixin, and extraroute_db.ExtraRoute_db_mixin.
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"""
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supported_extension_aliases = ["dvr", "router", "ext-gw-mode",
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"extraroute", "l3_agent_scheduler",
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"l3-ha"]
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def __init__(self):
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self.setup_rpc()
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self.router_scheduler = importutils.import_object(
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cfg.CONF.router_scheduler_driver)
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self.start_periodic_agent_status_check()
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super(L3RouterPlugin, self).__init__()
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def setup_rpc(self):
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# RPC support
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self.topic = topics.L3PLUGIN
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self.conn = n_rpc.create_connection(new=True)
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self.agent_notifiers.update(
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{q_const.AGENT_TYPE_L3: l3_rpc_agent_api.L3AgentNotifyAPI()})
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self.endpoints = [l3_rpc.L3RpcCallback()]
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self.conn.create_consumer(self.topic, self.endpoints,
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fanout=False)
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self.conn.consume_in_threads()
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def get_plugin_type(self):
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return constants.L3_ROUTER_NAT
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def get_plugin_description(self):
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"""returns string description of the plugin."""
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return ("L3 Router Service Plugin for basic L3 forwarding"
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" between (L2) Neutron networks and access to external"
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" networks via a NAT gateway.")
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def create_floatingip(self, context, floatingip):
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"""Create floating IP.
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:param context: Neutron request context
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:param floatingip: data for the floating IP being created
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:returns: A floating IP object on success
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As the l3 router plugin asynchronously creates floating IPs
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leveraging the l3 agent, the initial status for the floating
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IP object will be DOWN.
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"""
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return super(L3RouterPlugin, self).create_floatingip(
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context, floatingip,
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initial_status=q_const.FLOATINGIP_STATUS_DOWN)
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